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We consider the navigation of mobile robots in crowded environments, for which onboard sensing of the crowd is typically limited by occlusions. We address the problem of inferring the human occupancy in the space around the robot, in blind…

Robotics · Computer Science 2021-09-20 Javad Amirian , Jean-Bernard Hayet , Julien Pettre

Currently, the safety of people has become a very important problem in different places including subway station, universities, colleges, airport, shopping mall and square, city squares. Therefore, considering intelligence event detection…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Constantinou Miti , Demetriou Zatte , Siraj Sajid Gondal

In this paper, we propose a trust layer on top of Bluetooth and similar wireless communication technologies that can form mesh networks. This layer as a protocol enables computing trust scores based on proximity and bi-directional transfer…

Cryptography and Security · Computer Science 2020-09-15 Ramesh Raskar , Sai Sri Sathya

We present CoMet, a novel approach for computing a group's cohesion and using that to improve a robot's navigation in crowded scenes. Our approach uses a novel cohesion-metric that builds on prior work in social psychology. We compute this…

Smart buildings use occupancy sensing for various tasks ranging from energy-efficient HVAC and lighting to space-utilization analysis and emergency response. We propose a people counting system which uses a low-resolution thermal sensor.…

Computer Vision and Pattern Recognition · Computer Science 2020-05-06 Mertcan Cokbas , Prakash Ishwar , Janusz Konrad

Modeling realistic pedestrian trajectories requires accounting for both social interactions and environmental context, yet most existing approaches largely emphasize social dynamics. We propose \textbf{EnvSocial-Diff}: a diffusion-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Bingxue Zhao , Qi Zhang , Hui Huang

Crowd counting has recently attracted significant attention in the field of computer vision due to its wide applications to image understanding. Numerous methods have been proposed and achieved state-of-the-art performance for real-world…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Zhi-Kai Huang , Wei-Ting Chen , Yuan-Chun Chiang , Sy-Yen Kuo , Ming-Hsuan Yang

The increasing practice of engaging crowds, where organizations use IT to connect with dispersed individuals for explicit resource creation purposes, has precipitated the need to measure the precise processes and benefits of these…

Computers and Society · Computer Science 2017-02-15 J. Prpic , P. , Shukla

We have recently proposed a scheme to use the channel equalization blocks of telecommunication systems to sense changes in an environment. We call this communication-sensing, CommSense for short. After some initial positive results we tried…

Signal Processing · Electrical Eng. & Systems 2017-12-25 Abhishek Bhatta , Amit Kumar Mishra

The novel coronavirus (COVID-19) pandemic has posed unprecedented challenges for the utilities and grid operators around the world. In this work, we focus on the problem of load forecasting. With strict social distancing restrictions, power…

Signal Processing · Electrical Eng. & Systems 2020-06-17 Yize Chen , Weiwei Yang , Baosen Zhang

Many concepts for future generations of wireless communication systems use coherent processing of signals from many distributed antennas. The aim is to improve communication reliability, capacity, and energy efficiency and provide…

Information Theory · Computer Science 2024-03-06 Christian Nelson , Xuhong Li , Aleksei Fedorov , Benjamin J. B. Deutschmann , Fredrik Tufvesson

We present an algorithm for realtime anomaly detection in low to medium density crowd videos using trajectory-level behavior learning. Our formulation combines online tracking algorithms from computer vision, non-linear pedestrian motion…

Computer Vision and Pattern Recognition · Computer Science 2018-10-10 Aniket Bera , Dinesh Manocha

Compared with single image based crowd counting, video provides the spatial-temporal information of the crowd that would help improve the robustness of crowd counting. But translation, rotation and scaling of people lead to the change of…

Computer Vision and Pattern Recognition · Computer Science 2019-07-19 Yanyan Fang , Biyun Zhan , Wandi Cai , Shenghua Gao , Bo Hu

Region of Interest (ROI) crowd counting can be formulated as a regression problem of learning a mapping from an image or a video frame to a crowd density map. Recently, convolutional neural network (CNN) models have achieved promising…

Computer Vision and Pattern Recognition · Computer Science 2017-07-26 Feng Xiong , Xingjian Shi , Dit-Yan Yeung

Predicting the behavior of crowds in complex environments is a key requirement in a multitude of application areas, including crowd and disaster management, architectural design, and urban planning. Given a crowd's immediate state, current…

Artificial Intelligence · Computer Science 2019-10-15 Samuel S. Sohn , Seonghyeon Moon , Honglu Zhou , Sejong Yoon , Vladimir Pavlovic , Mubbasir Kapadia

Semi-supervised crowd counting is crucial for addressing the high annotation costs of densely populated scenes. Although several methods based on pseudo-labeling have been proposed, it remains challenging to effectively and accurately…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Maochen Yang , Zekun Li , Jian Zhang , Lei Qi , Yinghuan Shi

A quantitative COVID-19 model that incorporates hidden asymptomatic patients is developed, and an analytic solution in parametric form is given. The model incorporates the impact of lockdown and resulting spatial migration of population due…

Populations and Evolution · Quantitative Biology 2020-06-02 Shaurya Kaushal , Abhineet Singh Rajput , Soumyadeep Bhattacharya , M. Vidyasagar , Aloke Kumar , Meher K. Prakash , Santosh Ansumali

Collective decision-making arises from individual agents integrating their own personal observations with information obtained from social partners. In many biological systems that exhibit collective decision-making, the process by which…

Quantitative Methods · Quantitative Biology 2026-04-28 Ling-Wei Kong , Naomi Ehrich Leonard , Andrew M. Hein

Due to the complexities of virus genotypes and the stochastic contacts in human society, it is a big challenge to estimate the potential risks of getting exposed to a widely spreading virus. To allow the public to be aware of the exposure…

Physics and Society · Physics 2020-06-19 Ziheng Sun

In recent years, vision-based crowd analysis has been studied extensively due to its practical applications in real world. In this paper, we formulate a novel crowd analysis problem, in which we aim to predict the crowd distribution in the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-11 Yuzhen Niu , Weifeng Shi , Wenxi Liu , Shengfeng He , Jia Pan , Antoni B. Chan